diff options
Diffstat (limited to 'arch/um/os-Linux/process.c')
| -rw-r--r-- | arch/um/os-Linux/process.c | 47 |
1 files changed, 26 insertions, 21 deletions
diff --git a/arch/um/os-Linux/process.c b/arch/um/os-Linux/process.c index d9c5238..d261888 100644 --- a/arch/um/os-Linux/process.c +++ b/arch/um/os-Linux/process.c @@ -15,10 +15,11 @@ #include "os.h" #include "user.h" #include "user_util.h" -#include "signal_user.h" #include "process.h" #include "irq_user.h" #include "kern_util.h" +#include "longjmp.h" +#include "skas_ptrace.h" #define ARBITRARY_ADDR -1 #define FAILURE_PID -1 @@ -100,6 +101,21 @@ void os_kill_process(int pid, int reap_child) } +/* This is here uniquely to have access to the userspace errno, i.e. the one + * used by ptrace in case of error. + */ + +long os_ptrace_ldt(long pid, long addr, long data) +{ + int ret; + + ret = ptrace(PTRACE_LDT, pid, addr, data); + + if (ret < 0) + return -errno; + return ret; +} + /* Kill off a ptraced child by all means available. kill it normally first, * then PTRACE_KILL it, then PTRACE_CONT it in case it's in a run state from * which it can't exit directly. @@ -206,24 +222,13 @@ void init_new_thread_signals(int altstack) int run_kernel_thread(int (*fn)(void *), void *arg, void **jmp_ptr) { - sigjmp_buf buf; - int n; - - *jmp_ptr = &buf; - n = sigsetjmp(buf, 1); - if(n != 0) - return(n); - (*fn)(arg); - return(0); + sigjmp_buf buf; + int n, enable; + + *jmp_ptr = &buf; + n = UML_SIGSETJMP(&buf, enable); + if(n != 0) + return(n); + (*fn)(arg); + return(0); } - -/* - * Overrides for Emacs so that we follow Linus's tabbing style. - * Emacs will notice this stuff at the end of the file and automatically - * adjust the settings for this buffer only. This must remain at the end - * of the file. - * --------------------------------------------------------------------------- - * Local variables: - * c-file-style: "linux" - * End: - */ |